Is the patent opening day the authorization day?

The date of publication of the patent application, also known as the date of publication, refers to the date when the patent department, after receiving the application for a patent for invention, considers that it conforms to the provisions of the patent law after preliminary examination, and will publish it after 18 months from the date of application. Can be announced as soon as possible at the request of the applicant. Public days are for invention patents, but there are no public days for utility models and designs. The date of authorization announcement refers to the date when the patent department makes a decision to grant a patent right, issues a patent certificate and registers the announcement at the same time. The patent right shall take effect as of the date of announcement. When is the application date?

The filing date is the date when the patent application documents are submitted to the Patent Office, and the publication date is usually the date when the patent authorization is announced.

If the flow rate is far below the minimum flow rate to ensure accuracy, there will be no output (such as vortex flowmeter) or the output signal will be cut off as a small signal (such as differential pressure flowmeter), which is unfavorable and unfair to suppliers. In order to prevent the loss of benefits, for a specific set of thermal energy metering equipment, the supply and demand sides often agree that a certain flow value is the "agreed lower limit flow" according to the flow measurement range and the achievable range, and agree that if the actual flow is less than the agreed value, it will be charged according to the lower limit flow. The metrological administrative department of the people's government at or above the county level may set up metrological verification institutions according to needs, or authorize metrological verification institutions of other units to perform compulsory verification and other verification and testing tasks. Personnel who perform the verification and testing tasks specified in the preceding paragraph must pass the examination. This function is usually realized in the flow display instrument. The metrological administrative department of the local people's government at or above the county level shall, according to the needs of the local area, establish public standard instruments of measurement, which shall be used after passing the examination presided over by the metrological administrative department of the people's government at a higher level. Enterprises and institutions may, as required, establish standards of measurement for their own use, and the highest standards of measurement shall be used after passing the examination presided over by the metrological administrative department of the relevant people's government. Metrological verification shall be carried out on site in accordance with the principle of economy and rationality. Metrological verification must be carried out in accordance with the national metrological verification system table. The national metrological verification system table shall be formulated by the metrological administrative department of the State Council. To sum up, the date of publication of the patent application is also the date of publication, which refers to the date when the patent department, after receiving the application for a patent for invention, finds that it conforms to the provisions of the Patent Law after preliminary examination, and publishes it 18 months after the date of application.

legal ground

Article 28 of the Patent Law of People's Republic of China (PRC) The date when the patent administrative department of the State Council receives the patent application documents shall be the filing date. If the application documents are mailed, the postmark date of mailing shall be the application date.